The new cases bring the number of probable cases to 23 in Madison County and four in Montgomery County, Dr. Don Williamson said in a 10 a.m. news conference. Jefferson, Shelby, Pike and Limestone counties have had one probable case each. The Limestone case was initially misclassified as a Madison County case.

The state has spent $160,000 on equipment and supplies that will enable it to speed up testing of potential swine flu samples. The lab now should be able to process 120 to 180 samples a day, Williamson said.

"We're going to try to work through all of the samples we get," he said.

Williamson said the lab has tested samples from all over the state but has found no swine flu so far in specimens from places such as the Gulf Coast, Cullman and Dothan. He said none of the state's 31 cases of probable swine flu has resulted in hospitalization or death.